Seat for pipe-couplings.



No. 792,580. PATENTED JUNE 20, 1905. W, w. BATEMAN.

SEAT FOR PIPE GOUPLINGS.

APPLICATION FILED 00T- 18.1904.

Patented June 20, 1905.

ATENT Fries.

WILLIAM IV. BATEMAN, OF SUNBURY, PENNSYLVANIA, ASSIGNOR OF ONE- THIRD TO F. K. HILL, OF SUNBURY, PENNSYLVANIA.

SEAT FOR PIPE-COUPLINGS.

SPECIFICATION forming part of Letters Patent No. 792,580, dated June 20, 1905.

Application filed October 18, 1904. Serial No. 228,989.

To all whom it may concern:

Be it known that I, IVLLLIAM W. BATE MAN, a citizen of the United States, residing at Sunbury, in the county of Northumberland and State of Pennsylvania, have invented new and useful Improvements in Seats for Pipe-Couplings, of which the following is a specification.

This invention relates to improvements in valve-seats for steam or air pipe couplings, and especially for cars, although its use is not limited to cars.

As the couplings are ordinarily constructed there is frequent leakage of air or steam due to the imperfections in the seats in the couplings; and the chief object of this invention is to prevent this leakage by having seats that will admit of slight lateral movement, thus insuring perfect contact of the same and insuring a perfect coupling.

The various features of the invention will be hereinafter more fully explained and described in connection with the accompanying drawings, in which Figure 1 is a horizontal central section through a train-pipe coupling, the checkvalves being omitted. Fig. 2 is a front view, partly broken away, of the mouth of a coupler-head provided with my improvements.

Fig. 3 is a perspective view of a spring for holding the seat in place. Fig. 4 is a central sectional view through the mouthpieccs and seats of two coupler-heads, illustrating the operation of the invention; and Fig. 5 is a 5 similar view illustrating a modification.

Referring to Figs. 1 to 4, inclusive, of the drawings, A and B indicate the two interlocking heads of a common form of train-pipe coupling, the check-valves being omitted.

Within each head I arrange a mouthpiece 1, which is suitably secured to the head and is provided at its outer end with a dished or concaved face 2. Upon this concave face is arranged a seat 3, having a convex face 4,

5 Fig. 4, making a close fit with the concave face 2 of the mouthpiece. The seat 3 is held in position bya split ring 5, of spring metal, having outwardly-bent tongues 6 and 7, which enter annular recesses 8 and 9, which are formed on the interiors of the n1outhpiece and seat, respectively. This spring permits the seat to be moved laterally to some extent with respect to the mouthpiece,

as illustrated in Fig. 4. The mouthpiece and seats of both coupler-heads are alike. The outer or meeting faces 10 of the seats are fiat,

as shown.

It will be clear from an inspection of Fig. 4 that if the heads do not come together or re main in perfect alinement the seats may move laterally and adjust themselves on the concave face of the mouthpiece in such manner as to prevent the escape of steam or air. WVhile it is desirable to have each coupling head provided with a movable seat, it will be seen that one coupling-head will connect with an ordinary coupling-head of the same type having a fixed seat and that in such case the movable seat will adjust itself to suit the position of the fixed seat in the opposing coup- 7o ling-head.

In my invention the parts are made of metal, and the composition packings usually employed at the mouths of train-pipe couplings and which soon become defective by use are unnecessary.

In Fig. 5 I have illustrated a modification in which the mouthpiece 1 is provided with a convex bearing or surface 2 at its outer end, upon which a seat 3, having a concave surface, is held by a spring in the same manner as these parts are held together in Figs. 1 and 4. This form of movable seat, having a concave surface resting upon a convex surface on the mouthpiece, is within the scope of my invention and is suitable for connecting with devices or couplings having fixed or movable seats.

Having described my invention, What I claim, and desire to secure by Letters Pat- 9o ent, is

1. A pipe-coupling head having a mouth and a laterally-movable seat bearing against said mouth, the meeting faces of one of said parts being concave, and the other convex.

2. A pipe-coupling head having a mouth and a laterally-movable seat bearing against said mouth, the meeting faces of one of said parts being concave, the other convex, and I the outer face of said seat having a flat surface.

3. A pipe-coupling comprising two interlocking heads, each head having a mouth, and a lateral lv-movable seat bearing against said mouth, the meeting face of one of said parts .in each head being concave and the other convex.

4. A pipe-coupling comprising two interlocking heads, each. head having a mouth, and a laterally-movable seat bearing against said mouth, the meeting face of one of said parts in each. head being concave and the other convex, and the outer faces of said seats having fiat meeting surfaces.

A pipe coupling head having at its mouth a concave bearing, a laterally-movable seat having a convex face fitting against said bearing and a spring arranged to hold the seat against the mouth.

6. A pipe coupling head having at its mouth a concave bearing, a laterally-movable seat having a convex face fitting against said mouth, and a fiat outer face, and a spring arranged to hold the seat against the mouth.

7. A pipe-coupling comprising two interlocking heads, each head having at its mouth a concave bearing, and a laterally-movable seat having a convex face fitting against said mouth. and a spring arranged to hold the s at against the mouth.

8. A pipe-coupling comprising two interlocking heads, each head having at its mouth a concave bearing, and a laterally-movable seat having a convex face fitting against said. mouth and a spring arranged to hold the seat against the mouth, the outer faces of said. seats having fiat meeting surfaces.

9. A pipe-coupling head having a mouth provided with an interior annular recess, a seat fitting against said mouth and having an interior annular recess, the meeting face of one of said parts being convex and the other concave, and a split ring of spring metal arranged within said mouth and seat and having tongues extending into said recesses.

10. A pipe-coupling head having a mouth. provided with an interior annular recess, a seat fitting against said mouth and having an interior annular recess, the meeting faces of one of said parts being convex and the other concave, and a split ring of spring metal arranged within said mouth and seat and having tongues extending into said recesses, the outer face of said seat having a fiat surface.

In testimony whereof I have signed my name to this specification. in the presence of two subscribing witnesses.

\VILLIAM WV. BATEMAN.

Vitnesses GEO. E. D'EPPEN, C. N. CLEMENT. 

